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Age, Dental Infections, and Coronary Heart Disease

Dept. of Medicine, Division of Cardiology and Division of Infectious Diseases, Helsinki University Central Hospital, Haartmaninkatu 4, 00290, Helsinki, Finland

S. Asikainen

; Depts. of Periodontology and Oral Radiology, Institute of Dentistry, University of Helsinki

J. Wolf

; Depts. of Periodontology and Oral Radiology, Institute of Dentistry, University of Helsinki

H. Jousimies-Somer

Anaerobic Reference Laboratory, National Public Health Institute, Helsinki, Finland

V. Valtonen

Dept. of Medicine, Division of Cardiology and Division of Infectious Diseases, Helsinki University Central Hospital, Haartmaninkatu 4, 00290, Helsinki, Finland

M. Nieminen

Dept. of Medicine, Division of Cardiology and Division of Infectious Diseases, Helsinki University Central Hospital, Haartmaninkatu 4, 00290, Helsinki, Finland

Epidemiological and intervention studies have suggested that infections are risk factors for coronary heart disease (CHD). Dental infections have appeared as cardiovascular risk factors in cross-sectional and in follow-up studies, and the association has been independent of the "classic" coronary risk factors. This case-control study aimed at detailed assessment of the dental pathology found in various CHD categories (including elderly patients). Altogether, 85 patients with proven coronary heart disease and 53 random controls, matched for sex, age, geographic area, and socio-economic status, were compared with regard to dental status, assessed blindly with four separate scores, and to the "classic" coronary risk factors (seven of the controls had CHD, and they were not included in the analyses). The dental indices were higher among CHD patients than in the controls, but, contrary to previous studies, the differences were not significant (between the CHD patients and their matched controls or among the different CHD categories). This result could not be explained by potential confounding factors. The participants in the present study were older and had more often undergone recent dental treatment in comparison with subjects in our earlier studies. Age correlated with the severity of dental infections only in the random controls but not in the coronary patients who, although young, already had high dental scores. We believe that the higher age of the participants in the present study is the most likely reason for the results. Other possible explanations include an age-related selection bias among older CHD patients, and the fact that those participating in studies like this may have better general health and thus also less severe dental infections. Thus, the role of dental infections as a coronary risk factor varies according to the characteristics of the population studied.

Key Words: dental infections • periodontitis • coronary heart disease.

Journal of Dental Research, Vol. 79, No. 2, 756-760 (2000)
DOI: 10.1177/00220345000790020901


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